Robin Roberts to Take Medical Leave From 'GMA'; Barbara Walters, Katie Couric & More Will Step In

In June, Good Morning America's Robin Roberts revealed she has myelodysplastic syndrome, a rare blood disorder. It's believed she contracted the condition due to treatment she received for breast cancer five years ago.

Since her shocking announcement, Robin has received a lot of support from co-workers, and now Barbara Walters, Diane Sawyer, Kelly Ripa and Katie Couric are showing their sense of camaraderie for their ABC pal by filling in for her while she takes medical leave for the bone-marrow transplant she needs, Reuters reports.

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"We have so many people who love Robin so much that everyone is willing to come and join us for a bit," said Good Morning America executive producer Tom Cibrowski.

On Thursday, Robin, 51, talked to journalists in Beverly Hills via satellite from New York and said she felt "moments of fatigue" while on air, but she also been "energized" by work because in recent weeks GMA has been beating its rival Today in the ratings for the first time in 16 years.

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It's still unclear when the leave of absence will take place, but Robin said the "medical leave will start, most likely, end August, beginning September."

After leaving CBS News and Today, Katie is now working on launching her own daytime talk show, and she told reporters on Thursday she's looking forward to returning to an early morning show for a short time — so don't expect her to come back full time.